Heating attachment for furnaces and stoves



(No Model.)

J. T. GREENWOOD.

HEATING ATTACHMENT FOR FURNAGES AND STOVBS.

, No. 334,429. Patented Jan. 19,1886...

i 'nesse. H F" m/en0--. //11{ I a zz UNITED STATES PATENT OFFICE.

JOHN T. GREENWOOD, OF KALAMAZOO, MICHIGAN.

HEATING ATTACHMENT FOR FURNACES AND STOVES.

SPECIFICATION forming part of Letters Patent No. 334,429, dated January 19, 1886. Application filed July 27, 1885. Serial No. 172,717. (No model.)

To aZZ whom it may concern.-

Be it known that I, J OHN T. GREENWOOD, a citizen of the United States, residing at Kalamazoo, county of Kalamazoo, State of Michigan, have invented a new and useful Heating Attachment for Furnaces and Stoves, of which the following is a specification.

The object of this invention consists in certain improvements in heating attachments for furnaces and stoves, below described and claimed. Y

In the drawings forming a part of this specification, Figure 1 shows the basement or cellar, and rooms above the same, of a building, in vertical section, with a furnace in the basement and the air-heater in a room above, the furnace and heater being in side elevation. Fig. 2 is a vertical section of the heater, enlarged; Fig. 3, top view of Fig. 2, and Fig. 4 a cross-section on line 2 2 in Fig. 3 and top view of parts below said line.

Referring to the letters marked on the drawings, indicating like parts in each figure, F is the well-known or common style of furnace now in use, the dotted pipe 0 showing the plan now in use for conveying the smoke from the furnace to the chimney O. The holes (in black) on upper side of the furnace, show where the heat-conveying pipes are connected, (pipes not shown,) which are extended to different parts of the building.

It is not my purpose to do away with the heat-conveying pipes now in use, but to utilize the waste heat in the draft-pipe, which has heretofore been conveyed from the basement up the chimney. To this end I run a draft-pipe, c, from the furnace to a room above the basement, and connect with said pipe an airheater, and from said air-heater extend the pipe 0 into the chimney G, to carry off the smoke, which of course passes, on its way from the furnace F to the chimney 0, through the air-heater. With the air-heater are connected other pipes, or, for conveying surplus heated air to other parts of the building. The plan here illustrated provides for three such air-pipes a, Fig. 3; but the number is a matter of choice. These pipes a may be run to any, part of the building, to contiguous rooms, as in Fig. 1, and to rooms above. The smokepipe may be extended to the rooms above,

connecting with other air-heaters before entering the chimney. By this plan of utilizingthe waste heat from the furnaces in common use a great saving in fuel is effected, and many parts of the building warmed thereby which have no heat-conveying pipes running thereto.

The construction of the heater is more clearly shown in Fig. 2, the portion].) of said heater being somewhat similar to air-heaters which I have heretofore manufactured. The pipes ain the drum receive air from beneath, either in the room, as indicated by arrows, or pipe may be run outdoors through the floor and wall of the building to convey cold air into the heater. The heat, entering the drum through pipe 0, warms the air in the pipes at. A jacket, B, incloses the upper portion of the heater-drum D, leaving an air-chamber above the top of said drum. The hot air enters this chamber from the air-heating pipes at, and the cool air, which enters the base of the jacket, as shown by arrows, enters the air-chamber and drives the hot air through the pipe or pipes or. This air-heater will be found useful in heating air and throwing it into the room or through pipes to other rooms, by connecting it with a common heating-stove or cook-stove in the room.

At E in Fig.1 is shown a damper which may be opened or closed to regulate the draft and opened for the escape of impure air in the room.

When using the air-heater in a dwellinghouse, perhaps the best plan is to admit the air into the pipes 11, as shown in Fig. 2, above the floor; but for school-rooms and the like it maybe preferred to admit the air from outdoors, as above described.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

l. The combination, with a basement-furnace, of an air-heater consisting of the heating'drum with airpipes passing therethrough, and the jacket surrounding the upper portion of the drum, and forming an air-chamber above said drum, pipes connecting the heater with the furnace and chimney, and pipes connecting the jacket for conveying hot air, all substantially as set forth.

2. The air-heater consisting of the drum unto subscribed my name in presence of two with air-pipes passing therethrough and a witnesses. jacket inclosing the upper portion of the drum T and forming an air-chamber above said drum, JOHN GREE) VVOOD' 5 and an air'receiving space around the drum, Vitnesses:

substantially as set forth. \VM. HASTY, In testimony of the foregoing I have here- SAMFOLZ. 

